Commercial Refrigeration FAQ:
40+ Questions B2B Buyers Ask

A standard 80-150 m² convenience store typically runs a 6-8 SKU refrigeration set:

• Glass door merchandiser, plug-in 200-350L, for bottled beverages and dairy at the customer-facing wall
• Upright multideck open chiller, 700-1500L, for produce, sandwiches, and grab-and-go meals
• Undercounter refrigerator for back-of-house prep and overflow
• Small freezer island for ice cream and frozen snacks
• Slim grab-and-go cooler at the checkout for impulse SKUs

This combination covers roughly 90% of the cold-SKU mix in a Tier 1 or Tier 2 convenience format.

Four zones minimum cover a full supermarket lineup:

• Chilled (2-8°C) for beverages, dairy, and produce — handled by multideck open chillers
• Fresh (-2 to +2°C) for meat and seafood — handled by upright reach-ins and deli/meat display
• Frozen (-18 to -22°C) for ice cream and frozen food — handled by island freezers
• Ambient for non-refrigerated items (handled outside the refrigeration plan)

Cross-zone contamination and defrost cycle coordination are the spec traps to watch for.

Climate class is the ambient temperature the cabinet is designed to operate in without compressor overload:

• Class 3 = 25°C ambient (temperate: most of Europe, northern US, Central Asia in winter)
• Class 4 = 30°C ambient (Mediterranean, southern US, Middle East shoulder seasons)
• Class 5 = 40°C ambient (tropical: Southeast Asia, Middle East summer, equatorial Africa)

For tropical destinations, Class 5 is essential for compressor longevity. Shipping a Class 3 cabinet to a 40°C ambient market cuts compressor life in half and voids most warranty claims. Buyers sourcing for SE Asia, the Gulf, or equatorial Africa should spec Class 5 from day one.

Both are food-safe, but they behave very differently in a working kitchen:

• 304 stainless: 18% chromium + 8% nickel. The food-contact grade. Resists chlorinated cleaning chemicals and salt-heavy seafood prep without pitting. Non-magnetic.
• 430 stainless: 16-18% chromium, no nickel. Cheaper and magnetic, but it pits in damp or salty environments over time.

For daily chlorinated wipe-downs or seafood prep, 304 is the correct spec.

Yes. We configure the compressor and electrical package at the factory based on the destination country's mains specification. A guest-room minibar can ship 110V/60Hz for North America and 220V/50Hz for Europe with no field rewiring. Larger commercial compressor units run 380V/3-phase with the appropriate breaker panel. This is a routine OEM/ODM configuration, not a custom surcharge.

Working on a multi-voltage rollout? Share your destination countries in the RFQ and we will pre-configure each SKU for the correct mains.

MOQ depends on the product line and the customization depth:

• Standard catalog SKUs: ship from 1 unit (sample) to 5-20 units (production run)
• OEM/ODM with private label (Pantone color matching + custom logo + custom packaging): MOQ starts at 50 units per SKU
• OEM with custom dimensions or compressor platform: minimum container volume, typically 20-50 units per SKU depending on the line

The deeper the customization, the larger the commitment, but the sample path is always open before you commit.

A standard OEM project runs 90-150 days, broken into six phases:

1. Requirements gathering (10 days) — spec, branding, certifications, destination
2. CAD drawings + samples (15 days) — engineering mockup and pre-production unit
3. Client testing and sign-off (14 days) — your QC team inspects the golden sample
4. Mass production (30 days) — full SKU run at the factory
5. Packing and sea freight (20 days) — export packaging, FOB Qingdao loading
6. On-site installation (10-15 days) — destination-port setup

Customized projects with custom dimensions, multilingual documentation, and factory acceptance testing run the full 120-150 day window. Catalog OEM runs without custom CAD land closer to 90 days.

Yes. OEM/ODM customization covers:

• Brand color matching to Pantone references with ΔE ≤ 2 tolerance on door frames and side panels
• Logo placement on door frames, back panels, and control bezels
• Custom packaging with your private label artwork and target-market barcodes
• User manuals in your destination language (EN, RU, AR standard; others on request)

For convenience store chains, custom finishes match franchise identity without a tooling surcharge, and the per-unit cost premium is small at the 50+ unit MOQ. Maria's hotel project shipped with the operator's bilingual EN/ES control panel decals and a Pantone-matched front frame.

The three terms get used loosely, but the operating meaning is:

• OEM (Original Equipment Manufacturer): you provide the design or spec, we manufacture to your drawings. You own the result.
• ODM (Original Design Manufacturer): we provide the base design platform, you customize branding, dimensions, and finish.
• Private Label: a subset of OEM focused on branding only (logo, color, packaging) on an existing platform.

Most Yichuhui export customers use ODM with private label elements — they take a proven platform and apply their own brand and finish. Pure OEM with full custom engineering is reserved for the larger 500+ unit projects.

Technically yes. Operationally, it is painful. Multi-vendor service contracts drive 30-50% higher lifetime maintenance costs compared to a single OEM partner because:

• Spare parts inventory doubles or triples
• Service technicians need cross-vendor training
• Warranty terms collide when two OEMs blame each other for a downstream issue

The cleanest spec for a single restaurant or hotel kitchen is one OEM partner across the whole refrigeration lineup. Standardization also keeps the controller interface consistent for the kitchen staff.

Three reasons show up on every spec sheet:

• GWP: R-290 has a 100-year Global Warming Potential of 3. R-134a sits at 1,430. That is a 477x difference in climate impact, per IPCC AR6 Working Group 1.
• Cooling capacity: R-290 delivers roughly 1.6x the volumetric cooling capacity of R-134a. Smaller compressors can move the same heat load.
• Electrical draw: lower compressor run-time plus smaller compressor size means lower electrical consumption over the 18-hour kitchen day.

The trade-off is flammability (A3 class), which is why charge size is capped at 500g per appliance under EN IEC 60335-2-89:2022.

Yes, under two conditions:

1. Charge ≤500g per cabinet (the EN IEC 60335-2-89:2022 ceiling for unrestricted placement) plus ASERCOM guidance on charge size and refrigerant lines.
2. Basic room ventilation — the standard commercial kitchen exhaust rate is enough to keep the risk profile comparable to a domestic LPG cylinder.

R-290 (propane) is A3 classified (mildly flammable), but in sub-500g charges the practical risk is the same order of magnitude as the gas under a stovetop. Yichuhui ships R-290-ready platforms with the per-unit charge size certified and printed on the rating label.

Yes for new builds and for major retrofits:

• New builds: R-290 ships from day one, no field conversion needed
• Major retrofits: the existing refrigerant line and compressor need replacement. R-290 has roughly 1.6x the cooling capacity of R-404A, so charge size typically drops 40-50% at equivalent cooling duty
• R-404A in service: no swap required by regulation, but the EU F-Gas phase-down is making R-404A expensive to top up over time

For supermarket chains planning a 2027-2028 rollout, the cost math now favors R-290 at the design stage.

500g per appliance under EN IEC 60335-2-89:2022 for unrestricted placement in a commercial space. Yichuhui standard platforms all ship well below that ceiling:

• AFBB upright freezer: under 150g per unit
• DST prep table: under 150g per unit
• AST undercounter: under 150g per unit
• MLD open chiller: under 150g per unit

Every cabinet leaves the factory with the per-unit charge size printed on the rating label.

• CE is held on the active commercial refrigeration platforms. CE technical files are available on request for due-diligence audits.
• ISO 9001 and ISO 14001 are in progress — please ask the sales desk for the current status before publishing either certificate in tender responses.
• NSF/ANSI 7 is accepted for food-service equipment in the US and Canada. Confirm NSF/ANSI 7 status per specific SKU with the sales desk.
• HACCP-compatible workflow is built into our restaurant and convenience store lines, supporting the temperature logging and 304 stainless food-contact surfaces that HACCP audits look for.

The bottom line: CE is active and verifiable. ISO 9001, ISO 14001, NSF/ANSI 7, and HACCP should be confirmed per destination market and per SKU before they go into a tender document.

For most international markets, NSF/ANSI 7 is the safest minimum benchmark because:

• It is accepted globally, including by local inspectors in regions with their own food-grade rules (EU, Japan, Australia).
• It satisfies most US and Canadian municipal health-department requirements.
• Operating without NSF-certified equipment exposes you to insurance and license risk in most jurisdictions.

So if you are unsure whether NSF/ANSI 7 is required for your destination, the safest answer is to spec it on the RFQ and let the factory confirm whether the platform already carries it. For EU or Japan destinations, local equivalents may be stricter than NSF/ANSI 7, but NSF is still a useful baseline.

HACCP (Hazard Analysis Critical Control Point) is the food-safety management standard required in most commercial kitchens. Yichuhui supports HACCP through three design choices in the restaurant line:

• Temperature logging compliance on the controller (HACCP requires proof that cold-chain temperatures stayed in range)
• NSF/ANSI 7 certification on food-contact surfaces for US and Canadian destinations
• 304 stainless steel on all food-contact areas, which holds up to the chlorinated cleaning chemicals HACCP sanitation procedures require

The combination of those three features is what lets a Yichuhui-equipped kitchen pass a typical HACCP audit.

Yes. All Yichuhui platforms ship either R-290-ready or R-290 factory-charged. That puts the equipment in compliance with:

• EU F-Gas Regulation (EU) 2024/573 phase-down schedule for HFCs
• F-Gas ban on R-404A in new commercial equipment from 2025 onward
• EU Kigali Amendment obligations for the 80% HFC phase-down by 2030

Export documentation includes the refrigerant declaration for EU customs. R-290 has a GWP of 3, so it sits well below the 150 GWP threshold that triggers the F-Gas restrictions.

Standard quotation is FOB Qingdao. CIF to destination port is quoted on request using the current freight rate. Yichuhui does not handle destination-port customs clearance or in-country installation as a standard service, but:

• We work with your nominated freight forwarder
• We can introduce you to installation partners in your target market on request
• For projects over $300K USD, on-site installation supervision is included

This split is intentional. FOB and CIF keep the export side clean, and the destination side is best handled by a forwarder who knows the local rules.

MOQ depends on the SKU and the configuration:

• Standard catalog SKUs: ship from 1 unit (sample) to 5-20 units (production)
• OEM/Private Label orders: require minimum container volume, confirmed per project and per SKU
• Custom OEM with new tooling: MOQ typically starts at 50 units per SKU

Lead time is confirmed in every written quote, but the baseline ranges are:

• Standard in-stock catalog SKUs: 7-15 days after order confirmation
• OEM-configured units: 25-40 days for production
• Samples, in-stock SKUs: 7-12 days
• Samples, OEM-configured units: 25-40 days
• Full custom projects (CAD + sample + production + freight): 90-150 days

Rush production is possible for catalog SKUs at a surcharge, subject to capacity. The 90-150 day full custom window is the working number for the OEM/ODM project plan.

• Standard terms: 30% T/T deposit on order confirmation, 70% balance against copy of B/L
• L/C at sight: accepted on orders over USD 50,000
• OA (open account) terms: available for established distributor accounts after the second container cycle
• Per-project terms: negotiated for larger OEM/ODM projects

Payment terms are quoted per project. The first container is almost always T/T, and OA opens up once the buyer-seller credit history is established.

• Standard quotation: FOB Qingdao
• CIF to destination port: quoted on request using the current freight rate
• EXW (ex-works): available for buyers with their own freight arrangements

We do not routinely quote DDP, because destination customs and last-mile are best handled by a forwarder who knows the local rules. For projects over $300K USD, we can introduce you to installation partners and forwarders in your target market.

For a new supermarket, refrigeration installation typically takes 2-4 weeks depending on store size and equipment complexity:

• Open chillers and island freezers ship pre-assembled — they roll in and plug in
• Remote condensing units require on-site refrigerant line work by a licensed refrigeration technician
• Multi-deck chillers with glycol loops need a mechanical room and a chiller plant connection

A typical 800 m² supermarket takes about 2-3 weeks. A 2,500 m² hypermarket runs 3-4 weeks with multiple crews in parallel.

No. Samples are paid. The sample fee is refundable against the first production order from the same buyer. We do not ship free samples because we have been burned by sample requests used for spec scraping rather than real evaluation. Sample cost varies by SKU and shipping method (air freight or sea-air combo to destination port).

For OEM projects, the sample path includes a "golden sample" (pre-production sample) that your QC team inspects and signs off before mass production starts. That golden sample is on the buyer, but it is credited back on the production order.

• 12 months on compressor from date of B/L
• 6 months on parts from date of B/L
• Coverage: manufacturing defects and compressor failure under normal operating conditions
• OEM projects: extended warranty can be negotiated as part of the commercial agreement
• Warranty tickets: route directly to the engineering team that built the cabinet, not a generic service desk

Warranty claims are diagnosed within 24 hours and resolved with shipped parts or a full unit replacement within 5-7 days for in-warranty cases.

Quality uprights run 10-15 years with proper maintenance. The compressor is the primary wear point — replace it at year 8-10 to extend total life to 18-20 years. Yichuhui stocks compressor replacement kits for all units shipped since 2018, so the 8-10 year compressor swap is a routine service event, not a custom order.

The restaurant line is sized for this 10-15 year service life from the spec stage.

• Spare parts availability: 10 years from the original invoice date
• Common parts (gaskets, hinges, controllers, fans, LED strips): ship within 48 hours by air freight
• Compressor replacement kits: stocked for current platforms
• Older units (2014-2017 vintage): covered by a refurbishment program — send the cabinet back, we replace the compressor and re-test before returning

The 10-year parts commitment is the line that separates an OEM partner from a transactional supplier. It is also why the warranty ticket routes to the engineering team that built the cabinet — they know the BOM and the failure modes.

Yes, by appointment. Send your travel dates, the number of visitors, and the equipment categories you want to inspect. We arrange:

• Pickup from Jinan Yaoqiang International Airport (TNA) or Qingdao Jiaodong International Airport (TAO)
• Factory tour (3-4 hours): production floor, QC station, finished-goods warehouse
• Engineering meeting: with the team that will build your cabinets

The factory tour is the single highest-leverage day in any OEM relationship. Bring your QC checklist and your spec sheet, and we will walk the BOM line by line.

• Written RFQs: written quote within 48 business hours
• WhatsApp messages: answered within 4 business hours during China Standard Time (UTC+8)
• Languages: sales desk runs natively in English, Russian, and Arabic
• Service documentation: ships in EN, RU, and AR with every export cabinet

The fastest channel for urgent questions is always WhatsApp. For technical questions that need drawings or a CAD attachment, email is the cleaner path.

For projects over $300K USD, the after-sales package includes:

• On-site installation supervisor during the equipment installation phase
• Optional extended stay through commissioning and soft opening
• Remote video diagnostics scheduled into the first 30 days post-handover
• Spare parts dispatch by air freight within 48 hours
• Multilingual service documentation (EN/RU/AR) shipped with every cabinet

Yes. For projects over $300K USD, on-site installation supervision is included for the equipment installation phase, with the option to extend through commissioning. The supervisor handles:

• Electrical and plumbing validation against the engineering drawings
• Panel assembly for multi-cabinet runs
• Equipment calibration and cold-chain verification
• Hotel staff training on the controller interface and the daily maintenance routine

For projects under the $300K threshold, we can still arrange an on-site supervisor at the buyer's cost.